--- a/window.h	Sat Oct 22 06:39:32 2005 +0000
+++ b/window.h	Sun Oct 23 13:04:44 2005 +0000
@@ -553,7 +553,7 @@
 void DrawOverlappedWindow(Window *w, int left, int top, int right, int bottom);
 void CallWindowEventNP(Window *w, int event);
 void CallWindowTickEvent(void);
-void SetWindowDirty(Window *w);
+void SetWindowDirty(const Window* w);
 void SendWindowMessageW(Window *w, uint msg, uint wparam, uint lparam);
 void SendWindowMessage(WindowClass wnd_class, WindowNumber wnd_num, uint msg, uint wparam, uint lparam);